The Biodegradable Products Institute (BPI) has awarded its certification to Sealed Air's Cryovac® NatureTRAY™ package, confirming that the package meets the ASTM D6400 standard for compostable plastics as being biodegradable and compostable in municipal and industrial facilities. The Cryovac® NatureTRAY™ package, company claims, is the first BPI-certified package produced in the US made entirely from plant products acting as a substitute for oil-based polystyrene foam trays. The package uses NatureWorks® Ingeo™ biopolymers, the Cryovac® NatureTRAY™ package is claimed to deliver the benefits of traditional polystyrene foam trays, but is compostable in industrial, commercial or municipal compost facilities.
In bestowing its certification, BPI reviewed the results of independent laboratory tests of the Cryovac® NatureTRAY™ package to ensure it would biodegrade and disintegrate during composting at a similar rate to other compostable materials. The tests also included ecotoxicity and heavy metals testing to confirm that degradation of the tray will not diminish the value or utility of the resulting compost.